Adding device.



UNITED .STATES PATENT onirica.

BEVERLEY R. SOTT, 0F PITTSBURG,` PENNSYLVANIA.

ADDING DEVICE.

Specification of Letters Patent. Application led November 15, 1907.

To at! whom it may concern.'

Be it known that I, BiivnRLnr R. Soorr, a citizen of the United States,residing at Pittsburg, in the county of Allegheny yand State ofPennsylvania, have invented or discovered certain new and usefulImprove` ments in Adding Devices, of which the iollowing is aspeciiication, reference being had therein to the accompanying drawings.

This invention relates to adding devices, and has for its object toprovide a device of this character which will be simple and inexpensiveto manufacture, and easy of inanipulation, and by which the operation ofadding a plurality ot columns of iigi'ires may be accomplishedmechanically and rapidly, and the carrying` from one column to the nextbe done automatically.

To this end iny invention comprises certain constructions andcombinations of parts hereinafter fully described and particularlypointed out in the claims.

ln the accompanying drawn which illustrate one construction in which myinvention may be embodied, Figure l is a plan View of the devicecomplete. Fig. 2 is a similar View with the front plate removed, certainof the slides being omitted. Fig. 3 is a sectional View takensul'astantially on the line 5*3, Fig. 1.

The principal parts ot' my machine may be made of sheet metal,Celluloid, wood, or other suitable material, and comprise a` front orindex plate or sheetv 12, a back or intermediate guide plate 153, spacedby any suitable means iroin the plate 12 to provide a suitable recessbetween said plates for a plurality of slides 14C, and a cover plate 15,the plates 19., 13 and 15 being secured together byrivets or in anyother suitable manner.

rThe front plate' `12 is provided near its center with a row of totalopenings or apertures 16, and on either side of said row oi apertureswith a series of slots 17. As will )e seen by reference to Fig. l. theslots ot each series are alternately long and short,

the shortslot of one series being opposite the long slot o'l the other,while each of the long slots is prolonged at its end into an oilA- setportion 18 extending toward the center of the plate, said-oifset portionbeing coniiected with the main portion ot the slot by aninolined switchpart 18a. Adjacent each of the slots 1,7 is a series of numerals run-PateiitedvMar. 28, 1911. serial No. 402,282.

ning from 1 to 9, the numeral 1 being nearer the center of the plate inthe case of the short slots and the numeral 9 nearer t-hecenter in thecase of the long slots, so that said numerals are arranged in inverseorder adjacent. alternate slots and, reading from the top, the numeralsadjacent alternate slots are arranged in aseending'ordei while thoseadjacent the remaining slots are arranged in descending order, as shownin Fig. 1.

The slides 14 hereinbefore referred to are G5 j arranged to cooperatewith the openings 16 and slots 17 in the plate .12, and are constructedas follows, reference being had to Fig. 2. Eacp slide comprises a stripof suitable materia having at one edge a series of notches 19 suitablyspaced to correspond to the numerals adjacent the slots 17 hei-einbeforereferred toy and being provided opposite said notches with a series oi"numerals ruiming from O to .9, said numerals being arranged to bebrought successively opposite the corresj'ionding aperture 1G in theplate 1Q.. The numerals ou the slides 14e, like those adjacent the slots17, are arranged in inverse order on alternate slides, as shown in Fig.2. Each of the slides, with the exception of that farthest to the right,as shown in Fig. 2, is provided on its edge opposite to the notchesbefore rei-'erred to with a second series of notches, prei'erably`formed in- 85 clined seri-ations or teeth 20. said serrations or teethbeing respectively upwardly and downwardly directed in alternate slides.

The slides 11i. when in normal position, lie alternately with theirmajor portions on opposite sides ot the center line oi.2 the plate 1Q.For each slide 11i there is a corresponding aperture 1G and a pair of'alined slots 1'?, said pair comprising a short Slot on the side of thecenter line of the plate upon which the 'corresponding slide lies whenin normal position and a long slot on the opposite side of said centerline. The arrangement of the numerals on the slides is such that whenanv slide is in normal position the numeral O l(l"^.

will appear opposite the corresponding apenl ture 1G. The teeth orserrations Q0, when any particular slide is in normal -posititaug aredirected toward that end of the plate y[152 ffi which the correspondingslide occupies, and lie in such a positionas to pass the odset portion18 ot' the. long slot corresponding to the slide next. to the right. n f

' in the plate 15 over that by reason or depression in the opening 16,the beveled edges `Adjacent to each of the openings 16, the front plate12 is dished or recessed, or otherwisc A'constructed to provide at itsrear side adjacent each or said openings a slight beveled projection 21,adapted to cooperate with a series of corresponding recesses ordepressions22 said recesses 22 surrounding lor lying adjacent the"numerals on said slides. Suitably attached at its center to the rear ofeach of the slides la is a suitable fiatspring 23 provided with studs orother suitable projec tions 24 adapted to slide in slots 25 formed bywhich the movement of the slides 14e is guided. Said springs 23, byengagement with the platel, hold' the slides 14 in close engagement withthe rear of the late 12, thereby holding the projection 21 ininter-engagement with the corresponding the slide 14 and maintaining thecorresponding numeral in position opposite the opening 16. lt will beseen moret' the beveled form et the projection 21 and recess 22longitudinal pressure on the slide 1l willcause the spring 23 to yield,thus permitting the slide to be moved to bring a different numeralopposite of the projeetion 21 and.the corresponding recess in connectionwith the spring 23 tending to center the numerals with respect to theopening.

The arrangement ot the notches in the slides 14 and ot' the numerals onsaid slides and on the front plate 12 is such that when any slide ismoved to the limit of its motion toward the side ot the 'front plate 12provided with a corresponding short slot, and with the last notch insuch slide 14 opposite the numeral 9 adjacent said short slot, thenumeral 0 on the slide will appear opposite the aperture 16 ashereinbetore described, while the movement ot the slide toward theopposite side or the plate will cause the other numerals on said slideto appear successively opposite said aperture.

' For convenience, l. prefer to color the edges oit each ol the shortslots hereinbetore referred to, those ot the upper side oi the plate 12being ot a ditierent color :troni those atthe lower side thereof, and tocolor the notched edges ot alternate slides to correspond with theeoloringot the slots in such a manner that when the slides are movedinto their normal positions to bring the numeral O opposite the aperture16, as hereini betere described, the coloring of the slots and of thenotched edges ot the slide will correspond.

Upon each of the slides beyond the numeral 9 is placed a dot, star,orother conventional figure, while beyond vthe numeral 1 adjacent cach otthe long slots is placed a similar character, whose purpose will behereinafter described. I

formed in each of the slides 1l,

l l i l i i The operation of the above device is as follows: Assumingthe slides 14. to be in normal position with the numeral 0 appearing ateach et the apertures 16, suppose it to be desired to add the numbers476 and 967. A pencil or other suitable pointer 'is inserted through theslot 17 which is farthest to the right in the plate 12 and intoengagement with the notch in the corresponding slide which appearsopposite the numeral 6. Maintaining' the pencil or pointer in this notchit is moved toward the center of the plate and the slide is broughtdownA until the pencil or pointer comes into cngagement with the lowerend of the slot, the arrangement being such that the numeral 6 will nowappear in the right hand opening 16. The pencil is now placed in thenotch opposite the numeral 7 at the lower side of the plate adjacent thesecond slot from the right, and the corresponding slide moved upwardlyuntil the pencil or pointer en gages Athe upper end of this slot. Thepencil is now placed opposite the numeral 4 in the third column to theright, and the corresponding slide moved downwardly in a similar manner.The number Lt7 6 now appears in the three right hand apertures 16. Toadd to this number the number 967, as desired. the operator now proceedsas follows: lt will be observed that the length of the slides 111; issuch that whatever the position of each slide there will be a notchopposite each numeral from 1 to 9 in either the upper or lowercorresponding slot, but that there will be no notch opposite the samenu' mcral in both the upper and lower slots the length of the slides 1stheilig considerably less than the combined extent ofthe upper and lowerslots of each pair. The operator now places his pencil in the notch inthe right hand slide, opposite the numeral 7, this being now in thelower slot. The slide is now moved upwardly as hereinbefore described,and the pencil or pointer is moved to the limit ot its upward movement,being allowed to pass from the notch in the slide through the inclinedswitch portion 18a into the offset portion 1S ot the slot, and engagingthe scrrationor tooth on the second slidc.- The numeral 3 will nowappear in the {irst aperture at the right and the numeral S in thesecond, the latter havingl l pencil the second slide at the notchopposite the numeral 6, now in the upper slot, this slide is broughtdown in a similar manner the pencil passing into the offset portion ofthis slot and moving the third slide down one number, thus againcarrying one into the next column. The pencil or pointer is now placedopposite the numeral 9 in the third slot and the eorresporulingv slideis be readily moved upwardly. the pencil riding into the scribed thesame as embodied in a particular offset portion and the fourth slidemoved one number. The numerals in the apertures 16 non' rea-d ,M4-3, thecorrect sum ot tl e numbers 476 and 967. From the foregoing descriptionit will be clear that the timction ot the oll'set portions of the slides1t is to effect a carrying from one column to another, is necessary in1some cases. In every movement; of the slides the pencil or pointer ismoved toward the. center et the plate 12 or toward the apertures 16, andthis movement in all cases is continued until the end 'of the slot isreached, the pencil, it necessary, passing Without attention into theoil'- set portion 18 if the slot in Which the operation taking place beprovided with such ol'set. portion. It will thus be seen that the slidesare moved. sometimes forwardly and sometimes bacliwardly according tothe position ot the slide and the digit to be added, and that when anyparticular slide is moved backwardly the slide to the left isautomatically moved forwardly one number.

The purpose of the dots, stars, or other conventional figures abovereferred to will now be explained.

Suppose,l for example, the numbers to be added to be 496 and 969. Theslides are manipulated as above described to bring the number 4:96 intothe three right hand apertures. The pencil is now inserted in the notchin the first slide opposite the numeral 9 in the lovver slot, and movedupwardly through the offset portion to the lim'it ot' its movement. asusual. It vvill now be seen, however, that a black dot orstar appearsopposite the second aperture. VBetere proceeding further therct'orc itnecessary to reverse the second slide, this being done byY placing thepencil or pointer opposte the corresptmding dot. star, or othercharacter at the top ot the second slot and bringing the pencil andslide dovvn to the limit ot movement ot the pencil causing a movement ofone placein the third slide. Thepencil is nonY inserted opposite thenumeral (3 in the second slide` and this slide moved up and theoperation proceeded with in the usual way. It is thought that thenecessity for reversing the slide` as above referred to, will beapparenti. There a slide is so set as to bring the numeral S) oppositethe :perture 1G, it' this slide be so moved as to add 1 it is obviousthat the result should be 10, but as the numerals on the slide do notextend hevond the numeral t) this slide should now he brought back to (land the slide to the lett moved to indicate a number one greater. Thisis accomplished by reversing the slide as above described, the pencilpassing into the offset portion, and carrying the necessary figure overto the next column.

While I, in order that my invention may understood, have shown anddeconstruction, l'` vvish it to be distinctly under stood that l do notlimit myself to the crise construction shown, AYit being obvious thatmany changesmight be made therein Without departing ot my inventionu ,f

Having thus described my invention what pref from the spirit and scope lclaim'as my invention and desire to secure by Letters lfatent is:--

1. ln a device ot they character described. the combination with a plateprovided with a plurality of slots, of slides operable through saidslots, and numerals on said plat\y adjacent said slots, the numerals ad*jacent; alternate slots being arranged in as cending order and thoseadjacent the remaining .slots being arranged in descending order.

2. ln a device of the chziracterdescribed, the combination with a plateprovided with a series of apertures and a plurality ot slots, ot' slidesoperable through said slots, said slides being provided avith numeralsadapted to be brought opposite said apertures, and numerals on saidplate adjacent said slots,

`the numerals adjacent alternate slots being arranged in ascending orderand those adj acent the remaining slots being arranged in descendingorder.

Sl. ln a device ot the character described, the combination with a plateprovided with a series of apertures and a plurality of slots, ot slidesoperable through said slots, said slides being provided with numeralsadapted to he brought opposite said apertures, lthe numerals onalternate slides being arranged in ascending order and those in thcreu1ainingslides being arranged in descending order` and numerals onsaid plate adjacent said slots, the numerals 'adjacentalternate slotsbeing arranged in ascending order and those adjacent the remaining slotsbeing` arranged in descending order.l

At. ln a device ot' the character described, a plurality ot slidesprovided with numerals, the numerals on alternate slides being arrangedin ascending order and those on the remaining slides being arranged indescending order.

5. In a device of the character described, the combination with aplurality ol slots, of a plurality ot' slides ope 'able through saidslots and provided with numerals, the numerals on alternate slides beingarranged in ascending order and a plate provided with ll tl those on theremaining slides being arranged fsa in ascending order and those on theremainingl Yslides being arranged in descending order.

T. In a device of the character described, the combination with a plate,or' a plurality ot slides normally lying with their major portionsalternately on opposite sides of the center line of said plate andmovable thereacross. y

t5. In a device ot the character described. the combination with aplate, of a plurality of slides normally lying with their' majorportions alternately on opposite sides of the center' line of said plateand movable thereacrcss, and a front. plate provided with slots throughwhich said slides are operated.

9. In a device ot the character described, the combination with a plate,of a plurality of slides normally lying with their major portionsalternateljv on opposite sides ot the center' line of said plate and.movable thereacross, and a front plate provided with slots through whichsaid slides are operated, said slots being arranged in alined pairs atopposite sides of said center line.

It). In a device ot' the character described` the combination with aplate. of a plurality ot slides normally lying with their major portionsalternately on opposite sides of the center line of said plate andmovable thereacross, said alternate slides being differently`v colored,and a front plate provided with slots through which said slides areoperated, said slots being arranged in aliued pairs at opposite sides ofsaid center line, and the slot of each pair lying on the side of saidcenter line corresponding to the normal position ot' the correspondingslide having itsI edges colored to correspond with said slide.

ll. In a deviedof the character described.v the combination with a platehaving a series ot slots. one or more of said slots having an inclined'switch part and an-otlsct portion into which said switch part leads, ot'a slide provided with a series of nottzhes extending substantiallythroughout tbe length ot' onel ot its edges and accessible through oneot said slots, said slide being t'artber provided with a series ofinclined teeth extending for a portion ot the opposite edge andaccessible, through the oil'set portion of another ot said slots.

1;. In a device ot the character described, the combination with a platehaving a slot. ot' a slide, a spring carried by said slide, and bearingon said plate, and a projection on said spring entering said slot.

lll. In a device ot the character described, the combination with afrontplate having an aperture and a projection on the back thereofadjacent said aperture, of a slide ,having a plurality of recessesadapted successively to engage said projection.

14. In a device of the character described, thc combination with a frontplate having an aperture and a beveled projection on the back thereofadjacent said aperture, o a slide having a plurality of beveled recessesadapted successively to engage said projection.

l5. In a device of the character described, the combination with a frontplate having an aperture and a projection on the back thereof adjacentsaid aperture, of a numeral bearing slide having a plurality of recessesadjacent said numerals adapted successively to engage said projection.

iti. In a device of the character described, the combination with afront plate having an aperture and a projection on the back thereofadjacent said aperture, of a slide having a plurality ot' recessesadapted successively to engage said projection, and means for.vieldingly pressing said slide toward said front plate.

l 1T. In a device ot' the character described, the comlfiination with afront plate having an aperture and a projection on the back thereofadjacent said aperture, of a slide having a plurality of recessesadapted successively to engage said projection, an intermediate platehaving a slot, a spring interposed between said slide and saidintermediate plate, and a projection on said plate entering said slot.

1S. In a device of the character described, the combination with a platehaving a Slot, ot a slide, a tlat spring attached at its center to saidslide, and projections on the ends of lsaid spring entering said slot.

It). An adding device comprising a front or indi-.v plate or sheethaving two series of slots :dined in pairs, one slot of each pair beingstraight and the other slot of the pair hav tion into which said switchpart leads, a series ot numerals adjacent each slot, and a set of totalopenings in the middle part of the sheet between the two series ofslots, a bach-phite having a series of guidcways correspoinling innumber to the numbers ot the pairs ot slots in the front ot the indexplate, and a series ot slides movable in said guidewav and provided onopposite sides with open notches.

2U. .\n addingl device comprising a front or index plate or sheet havingtwo series of slots alined in pairs, one slot of each pair beingstraight and the other slot of the pair having an inclined switch partand an offset portion into which said switch part leads, a seriesI ofnumerals. adjacent each slot, and a set ot total openings in the middlepart of the lsheet between the two series of slots, a haelt-plate havinga series of guideways corresponding in number to the numbers of thepairs` ol slots in the front of the index plate, and a series ol' slidesmovable in said guideways and provided on opposite sides with opennotches.

ing a switch part and an offset. por- 21. An adding devicelcomprising afront or index plate or sheet having two series of slots alined inpairs, one slotl of each pair vbeing straight and the other slot of thepair having a switch part and anl offset portion into which said-switchpart leads, a series of numerals adjacent each slot, said numerals beingarranged in inverse order adjacent alternate slots, and a set of totalopenings in the middle part of the sheet between the two series ofguideways corresponding in num` ber to the numbers, of the pairs ofslots in the front or index plate, and a series of slides movable. insaid guideways and provided on opposite sides With open notches.

22. An adding device comprising a front or index plate or sheet havingtwo series of slots alined in pairs, one slot of each pair beingstraight and the other slot of the pair having a switch part and anoffset portion into which said switch part leads, a series of numeralsadjacent each slot, said numerals being arranged in inverse orderadjacent alternate slots,` and a set of total, openings in the middle,partof the sheet between the two series of guideways corresponding innumber to the numbers of the pairs of slots in the front or index plate,and a series of slides movable insaid guideway's and provided onopposite sides with open notches, f

and on their faces with numerals, said Anumerals being arranged ininverse order on alternate slides.

In testimony whereof I aiiX my signature, in presence of tWo Witnesses.

BEVERLEY R. sooTT.

Vitnesses:

RICHARD C. LONG, D. I. SHAW.

